Lubricating device for bearings.



C. F: TIIVHVL' LUBRICATING DEVICE FOR BEARINGS.

APPLICATION man JAN. 4. 1915.

W Patented Dem. 4:, 191?.

2 SHEETS-SHEET I.

in as near l men.

CHARLES F. TIMM, OF CHICAGO, ILLINOIS, ASSIGNOR T0 UNION SPECIAL MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

LUBBICATING DEVICE FOR BEARINGS.

Application filed January 1. 1915.

To all whom it may concern:

Be it known that I, CHARLES F. TIMM, a citizen of the United States, residing at Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Lubricating Devices for Bearings, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

The invention relates to new and useful in'iprovements in lubricating devices for bearings, and more particularly to a lubricating device for the bearing for the main shaft in the standard of a sewing machine.

An object of the invention is to provide a lubricating device wherein the lubricating oil will be continuously applied to the bearing through the aid of an absorbent pad which is so constructed as to provide a recess or pocket for the lubricating oil.

A further object of the invention is to provide an absorbent pad of the above character which is formed in units, each unit of which is shaped so as to substantially fit the chamber for the lubricating oil and provide a pocket or recess at the upper part of the chamber for the lubricating oil.

A further object of the invention is to provide a lubricating device of the above character wherein there is a chamber for the lubricating oil above the bearing and the support for the shaft is formed with slots leading from the chamber to the inner face of the bearing, which slots are connected by bridging sections, in order to prevent improper expansion of the bearing.

In the drawings,

Figure 1 is a front view of a sewing ma chine having my invention applied thereto;

Fig. 2 is an enlarged longitudinal section through the bearing for the main shaft and the lubricating device therefor;

Fig. 3 is a transverse sectional View through the same;

Fig. 41 is a perspective view of one of the units of the absorbent material which is placed in the lubricating chamber;

Fig. 5 is a view similar to Fig. 2, showing a slightly modified form of the invention;

Fig. 6 is a view similar to Fig. 3 of said modified form of the invention.

In the drawings I have shown a sewing machinewhich consists of a supporting bed Specification of Letters Patent.

Patented Dec. 1, 1%1'1.

Serial No. 381.

1, having a standard 2 rising therefrom,

which carries an overhanging arm 8, in which reciprocates a needle bar 1. The needle bar is reciprocated by a lever 5, through a link 6 which cooperates with an eccentric on the main shaft 7. These parts standard and is open at oneend thereof. A

threaded cap 10 serves to close the open end of the chamber. There are two oil ports 11 and 12 formed in the standard which extend from a point above the oil chamber 9 downwardly and rearwardly, so as to deliver oil substantially at the upper side of the oil chamber 9.

The supporting standard is provided with a slot 13, connecting the oil chamber 9 with the inner face of the bearing for the shaft 7. As shown in Figs. 2 and 3, this slot eX- tends the entire length of the oil chamber. Located in the oil chamber is an absorbent pad 14, which is formed of a series of units 15. These units are preferably made of felt and are heart-shaped, as clearly shown in Fig. 4;. This provides a substantially pointed section 16 and a concave or recessed section 17. IVhen the units are placed in the oil. chamber, they substantially fit the side walls of the chamber and the pointed end 16 is forced through the slot 13, so each unit makes contact with the shaft 7, as clearly shown in Fig. 2. The concave portion or recess 17 is at the upper side of the oil chamber, so the oil ports 11 and 12 will feed oil into this recess or pocket 18 formed by the concave portion 17 of the absorbent pad.

In Figs. 5 and 6 I have shown a slightly modified form of the invention. In this form of the invention, the opening 8 through the standard is provided with a bushing 19 and the bushing is formed with a slot 20 which connects the inner face of the bushing with the oil chamber 9. The bushing is centrally provided with a bridging section 21, which holds the bushing forming the bearing for the shaft from undue expansion or contraction. The absorbent pad and the construction of the oil chamber, is otherwise the same does not become hard or caked through use.

As above noted the units 15 are heart shaped as clearly shown in Fig. 4t and this shaping of the pad units will prevent the same from rotating or moving in the chamber and thus the pad is not only maintained in contact with the shaft but the recess 18 forming the oil pocket is also properly maintained.

It is also to be noted that the bridge 21 has a chamber formed at its inner face which is in line with the slot through which the pad projects and make contact with the shaft.

It will be obvious that minor changes in the details of the construction and arrangement of parts may be made, without departing from the spirit of the invention, as set forth in the appended claims.

Having thus described my invention, what I claim as-new and desire to secure by Letters Patent, is

1. A lubricating device for bearings comprising a support having a bearing therein, a chamber in the support above the bearing, said support having a slot connecting the chamber with theinterior surface of the bearing, and a shaped absorbent pad located within-said chamber, said pad being formed so as to provide an oil recess at the upper side thereof.

2. A lubricating device for bearings comprising a support having a bearing therein, a chamber. in the support above the bearing, said support having a slot connecting the chamber with theinterior surface of said bearing, and a series of shaped absorbent pads located side by side, said pads being formed with an oil recess at the upper sides thereof.

3. A lubricating device for bearings, comprising a support having a bearing therein, a chamber in the support above the bearing, said support having a slot connecting the chamber with the interior surface of said bearing, and an absorbent pad in said chamber, said pad and chamber being constructed so as to provide an oil recess at the upper side of said pad, said absorbent pad being divided vertically so as to form separate units, each of said units being substantially heart-shaped and placed in said oil chamber, so as to form a recess or pocket at the upper part of said oil chamber, and so as to make contact with the shaft through the slot leading to the inner face of the hearing.

at. A lubricating device for bearings, comprising a support having an opening therethrough, a bushing in said opening, a chamber in the support above the bushing, said bushing being slotted so as to connect the inner face thereof with said chamber, said bushing having a bridging piece extending centrally across the slot, an absorbent pad located in said oil chamber, said absorbent pad comprising separate units of felt shaped so as to engage the shaft extending through the bushing.

5. A lubricating device for bearings, comprising a support having an opening therethrough, a bushing in said opening, a chamher in the support above the bushing, said bushing being slotted so as to connect the inner face thereof with said chamber, said bushing having a bridging piece extending centrally across the slot, an absorbent pad. located in said oil chamber, said absorbent pad comprising separate units of felt shaped so as to engage the shaft extending through the bushing, and so as to form a pocket or recess at the upper side of said oil chamber, said support also being provided with oil ports whereby oil may be supplied to said recess.

6. A lubricating device for bearings comprising a support having an opening through a chamber in the support above the bearing, said support having a slot connecting the chamber with the internal surface of the opening and absorbent pads located in said chamber, said pads being substantially of heart shape, the point of the pad projecting through said slot whereby said pads are held from rotation and a recess or pocket is formed at the upper side thereof for the oil.

7. A lubricating device for bearings comprising a support having a chamber, pads for said chamber, each of said pads being heart shaped, said pads being located side by side with their pointed ends extending downwardly whereby an oil recess is formed at the upper sides of the pads.

In testimony whereof, I ailix my signature, in the presence of two witnesses.

CHARLES F. TIMM. Vitnesses S. GEORGE TATE, HAROLD C. Enwanns.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latcnts, Washington, D. C. 

